def forward(self, flat_obs, actions=None):
obs, taus = split_tau(flat_obs)
if actions is not None:
h = torch.cat((obs, actions), dim=1)
else:
h = obs
batch_size = h.size()[0]
y_binary = ptu.FloatTensor(batch_size, self.max_tau + 1)
y_binary.zero_()
t = taus.data.long()
t = torch.clamp(t, min=0)
y_binary.scatter_(1, t, 1)
if actions is not None:
h = torch.cat((
obs,
ptu.Variable(y_binary),
actions
), dim=1)
else:
h = torch.cat((
obs,
ptu.Variable(y_binary),
), dim=1)
for i, fc in enumerate(self.fcs):
h = self.hidden_activation(fc(h))
return - torch.abs(self.last_fc(h))
def forward(
self,
obs,
deterministic=False,
return_log_prob=False,
return_entropy=False,
return_log_prob_of_mean=False,
):
obs, taus = split_tau(obs)
h = obs
batch_size = h.size()[0]
y_binary = ptu.FloatTensor(batch_size, self.max_tau + 1)
y_binary.zero_()
t = taus.data.long()
t = torch.clamp(t, min=0)
y_binary.scatter_(1, t, 1)
h = torch.cat((
obs,
ptu.Variable(y_binary),
), dim=1)
return super().forward(
obs=h,
deterministic=deterministic,
return_log_prob=return_log_prob,
return_entropy=return_entropy,
return_log_prob_of_mean=return_log_prob_of_mean,
)
def forward(self, flat_obs, actions=None):
obs, taus = split_tau(flat_obs)
if actions is not None:
h = torch.cat((obs, actions), dim=1)
else:
h = obs
batch_size = taus.size()[0]
y_binary = make_binary_tensor(taus, len(self.max_tau), batch_size)
if actions is not None:
h = torch.cat((
obs,
ptu.Variable(y_binary),
actions
), dim=1)
else:
h = torch.cat((
obs,
ptu.Variable(y_binary),
), dim=1)
for i, fc in enumerate(self.fcs):
h = self.hidden_activation(fc(h))
return - torch.abs(self.last_fc(h))
def forward(self, flat_obs, **kwargs):
observations, taus = split_tau(flat_obs)
if self.obs_normalizer:
observations = self.obs_normalizer.normalize(observations)
flat_obs = torch.cat((
observations,
taus
))
return self.qf.forward(flat_obs, **kwargs)
def forward(self, flat_obs, actions=None):
obs, taus = split_tau(flat_obs)
if actions is not None:
h = torch.cat((obs, actions), dim=1)
else:
h = obs
batch_size = h.size()[0]
tau_vector = Variable(torch.zeros((batch_size, self.tau_vector_len)) + taus.data)
return - torch.abs(super().forward(h, tau_vector))
def forward(self, flat_obs, actions=None, **kwargs):
observations, taus = split_tau(flat_obs)
if self.obs_normalizer:
observations = self.obs_normalizer.normalize(observations)
if self.action_normalizer and actions is not None:
actions = self.action_normalizer.normalize(actions)
flat_obs = torch.cat((
observations,
taus
))
return self.qf.forward(flat_obs, actions=actions, **kwargs)
def forward(
self,
flat_obs,
return_preactivations=False,
):
obs, taus = split_tau(flat_obs)
batch_size = taus.size()[0]
y_binary = make_binary_tensor(taus, len(self.max_tau), batch_size)
h = torch.cat((
obs,
ptu.Variable(y_binary),
), dim=1)
return super().forward(
h,
return_preactivations=return_preactivations
)
def forward(
self,
flat_obs,
return_preactivations=False,
):
obs, taus = split_tau(flat_obs)
h=obs
batch_size = h.size()[0]
tau_vector = torch.zeros((batch_size, self.tau_vector_len)) + taus.data
h = torch.cat((
obs,
ptu.Variable(tau_vector),
), dim=1)
return super().forward(
h,
return_preactivations=return_preactivations
)
def forward(
self,
flat_obs,
return_preactivations=False,
):
obs, taus = split_tau(flat_obs)
batch_size = obs.size()[0]
tau_vector = Variable(torch.zeros((batch_size, self.tau_vector_len)) + taus.data)
h = obs
h1 = self.hidden_activation(self.first_input(h))
h2 = self.hidden_activation(self.second_input(tau_vector))
h = torch.cat((h1, h2), dim=1)
for i, fc in enumerate(self.fcs):
h = self.hidden_activation(fc(h))
preactivations = self.last_fc(h)
actions = self.output_activation(preactivations)
if return_preactivations:
return actions, preactivations
else:
return actions
def forward(self,
obs,
deterministic=False,
return_log_prob=False,
return_entropy=False,
return_log_prob_of_mean=False):
obs, taus = split_tau(obs)
h = obs
batch_size = h.size()[0]
tau_vector = torch.zeros((batch_size, self.tau_vector_len)) + taus.data
h = torch.cat((
obs,
ptu.Variable(tau_vector),
), dim=1)
return super().forward(
obs=h,
deterministic=deterministic,
return_log_prob=return_log_prob,
return_entropy=return_entropy,
return_log_prob_of_mean=return_log_prob_of_mean,
)
def forward(
self,
obs,
deterministic=False,
return_log_prob=False,
return_entropy=False,
return_log_prob_of_mean=False,
):
obs, taus = split_tau(obs)
batch_size = taus.size()[0]
y_binary = make_binary_tensor(taus, len(self.max_tau), batch_size)
h = torch.cat((
obs,
ptu.Variable(y_binary),
), dim=1)
return super().forward(
obs=h,
deterministic=deterministic,
return_log_prob=return_log_prob,
return_entropy=return_entropy,
return_log_prob_of_mean=return_log_prob_of_mean,
)
def forward(
self,
flat_obs,
return_preactivations=False
):
obs, taus = split_tau(flat_obs)
h = obs
batch_size = h.size()[0]
y_binary = ptu.FloatTensor(batch_size, self.max_tau + 1)
y_binary.zero_()
t = taus.data.long()
t = torch.clamp(t, min=0)
y_binary.scatter_(1, t, 1)
h = torch.cat((
obs,
ptu.Variable(y_binary),
), dim=1)
return super().forward(
h,
return_preactivations=return_preactivations,
)
def forward(self, flat_obs, actions=None):
obs, taus = split_tau(flat_obs)
if actions is not None:
h = torch.cat((obs, action), dim=1)
else:
h = obs
batch_size = h.size()[0]
tau_vector = torch.zeros((batch_size, self.tau_vector_len)) + taus.data
if actions is not None:
h = torch.cat((
obs,
ptu.Variable(tau_vector),
actions
), dim=1)
else:
h = torch.cat((
obs,
ptu.Variable(tau_vector),
), dim=1)
for i, fc in enumerate(self.fcs):
h = self.hidden_activation(fc(h))
return - torch.abs(self.last_fc(h))
def forward(
self,
obs,
deterministic=False,
return_log_prob=False,
return_entropy=False,
return_log_prob_of_mean=False,
):
"""
:param obs: Observation
:param deterministic: If True, do not sample
:param return_log_prob: If True, return a sample and its log probability
:param return_entropy: If True, return the true expected log
prob. Will not need to be differentiated through, so this can be a
number.
:param return_log_prob_of_mean: If True, return the true expected log
prob. Will not need to be differentiated through, so this can be a
number.
"""
obs, taus = split_tau(obs)
batch_size = obs.size()[0]
tau_vector = Variable(
torch.zeros((batch_size, self.tau_vector_len)) + taus.data)
h = obs
h1 = self.hidden_activation(self.first_input(h))
h2 = self.hidden_activation(self.second_input(tau_vector))
h = torch.cat((h1, h2), dim=1)
for i, fc in enumerate(self.fcs):
h = self.hidden_activation(fc(h))
mean = self.last_fc(h)
if self.std is None:
log_std = self.last_fc_log_std(h)
log_std = torch.clamp(log_std, LOG_SIG_MIN, LOG_SIG_MAX)
std = torch.exp(log_std)
else:
std = self.std
log_std = self.log_std
log_prob = None
entropy = None
mean_action_log_prob = None
pre_tanh_value = None
if deterministic:
action = torch.tanh(mean)
else:
tanh_normal = TanhNormal(mean, std)
if return_log_prob:
action, pre_tanh_value = tanh_normal.sample(
return_pretanh_value=True)
log_prob = tanh_normal.log_prob(action,
pre_tanh_value=pre_tanh_value)
log_prob = log_prob.sum(dim=1, keepdim=True)
else:
action = tanh_normal.sample()
if return_entropy:
entropy = log_std + 0.5 + np.log(2 * np.pi) / 2
# Because tanh is invertible, the entropy of a Gaussian and the
# entropy of the tanh of a Gaussian is the same.
entropy = entropy.sum(dim=1, keepdim=True)
if return_log_prob_of_mean:
tanh_normal = TanhNormal(mean, std)
mean_action_log_prob = tanh_normal.log_prob(
torch.tanh(mean),
pre_tanh_value=mean,
)
mean_action_log_prob = mean_action_log_prob.sum(dim=1,
keepdim=True)
return (
action,
mean,
log_std,
log_prob,
entropy,
std,
mean_action_log_prob,
pre_tanh_value,
)